package com.sky.service.impl;


import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {


    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private DishFlavorMapper dishFlavorMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    /**
     * @description //保存口味
     * @param dishDTO
     * @return void
     * @author riverlyn
     * @date 2024/10/6 17:59
     */
    @Transactional
    @Override
    public void saveWithFlavor(DishDTO dishDTO){

        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);

        //保存菜品
        dishMapper.insert(dish);

        Long dishId=dish.getId();
        //保存口味
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null && flavors.size()>0){
            //遍历赋值
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
        }
        //插入数据
        dishFlavorMapper.insertBatch(flavors);
    }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page=dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }


    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        //判断是否能够删除
        //起售中
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if(dish.getStatus()== StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        //属于套餐
        List<Long> setMealDishIdByDishIds = setmealDishMapper.getSetMealDishIdByDishIds(ids);
        if(setMealDishIdByDishIds!=null && setMealDishIdByDishIds.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        //删除
//        for (Long id : ids) {
//            dishMapper.deleteById(id);
//            //删除关联口味
//            dishFlavorMapper.deleteByDishId(id);
//        }

        //批量删除
        dishMapper.delteByIds(ids);
        dishFlavorMapper.deleteByDishIds(ids);
    }


    @Override
    public DishVO getByIdWithFlavor(Long id) {
        Dish dish = dishMapper.getById(id);
        List<DishFlavor> dishFlavors=dishFlavorMapper.getByDishId(id);

        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);

        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

    @Override
    @Transactional
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);

        dishFlavorMapper.deleteByDishId(dish.getId());

        List<DishFlavor> flavors=dishDTO.getFlavors();
        if (flavors!=null && flavors.size()>0){
            //遍历赋值
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            //插入数据
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        DishPageQueryDTO dishPageQueryDTO = new DishPageQueryDTO();
        BeanUtils.copyProperties(dish,dishPageQueryDTO);
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }
}
